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RHEL 6 hang at starting kdump

Hello-
I'm hoping to install RHEL 6 ( or 5 ) on a Dell Poweredge 2650, circa 2002, with 1 GB DDR mem. and 2 (?) 1.8 Ghz Xeon processors. I forgot to look at whether my new OS was 32 or 64. I'm not sure the hardware's up to doing the job. I tried Fedora first, installing from CD's, and I couldn't get it to boot to the GUI, went in and edited the default runlevel to 5 in /etc/inittab, so what happened was that I'd boot to loading the splash screen, and the progress bar would keep going ( slow ) until it looked like it would boot to the GUI, then it hung. So, I got out my trusty Red Hat EL 6 install media, ran that, rebooted then issued the "init 5" command at the command line, and during boot the system hung at "Starting kdump...[FAILED]. I'm wondering if there are additional steps to getting RHEL 6 to run in GUI mode, or if I should try something different. It was running W2K3 server before. I have the academic version license of Red Hat,
no support available through Red Hat and my institution is a strictly Windows/Sun shop. Do I need to look at a log?